Flying machine



April 7, 1925.

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Patented Apr. 7, 1925.

UNITED STA S ERICK OTTO, OF STETTIN-PODEJUCH,-GERMANY.

FLYING MACHINE.

Application filed April 29, 1924. Serial No. 709,936.

'1 0 all whom it may concern Be it known that I, Enron O'r'ro, a citizen of the German Republic, residing at Stettin- Podejuch, PostSydowsaue, Germany, have invented new and useful ln'lprovements in Flyin Machines, of which the following is a specification.

This invention relates to a flying machine of the kind provided with two pairs of carrying planes of which .one pair is held in a rotatable mounting and adapted to he pitched to act as a lifting propeller while rotated together with the mounting, the other pair of planes being adapted to be set in a vertical position to act as stability planes.

In a known machine of this kind, the propelling planes are connected by means of swinging frames, whereby the pitching is effected, to another frame adapted to rotate about the main body of the machine, the stability planes being carried by the main body above the rotatable ones.

The object of the present invention .is to produce a machine of this kind which is of simple construction and which can be easily controlled, and the invention consists in arranging each pair ofplanes on horizontal, coaxial shafts about which the adjustment takes place by means of suitable gears. The propelling planes are carried above the stability planes by a rotatable mast which surmounts the fuselage and which contains the gear whereby the planes are pitched.

Fig. 1 of the accompanying drawings represents a side view of the machine, partly in section, and I Fig. 2, a cross-section of the same on the line 22 of Fig. 1.

The flying-machine is provided with two pairs of carrying planes 1 and 4. The upper .pair of planes is carried by a mast 3 which is rotatably held in the fuselage 2 by ballbearings 5 and 6. There is a friction disc 7 secured to the lower end of the mast which is engaged by a driving disc 7 arranged I at right angles thereto. The disc 7 is slidably feathered on a shaft 9 which is coaxial with the crank shaft of the engine 8 and which can be coupled thereto by means of a clutch 10 so that the mast and the planes carried by the same can be rotated by themotor. The ratio of transmission can be regulated by an adjustment of the disc 7 across the face of the disc 7, and this is effected by means of a hand-wheel 15 connected to a screwwhich controls the position of the disc by means of a fork known. manner.

The planes 1 are held by independent tubular shafts 12 which are rotatably held in the mast 3. The adjacent ends of the shafts are fitted with flanges 23 which are connected by links 11 to a rod 11. the latter being slidably arranged inside the mast it so that it can be adjusted for positioning the planes 1. The links 11 operate-at opposite sides of the axis of the flanges. as shown in Fig. 1, so as to turn the planes in opposite directions. The rod 11 is connected to a grooved collar 24 which is slidably arranged on the mast 3 and which is controlled by a fork 25. The latter is'adjustable by means of a screw-spindle 13 and a hand-wheel 14 for positioning the planes 1.

The lower pair of planes 4 is connected to a tubular shaft 16 which traverses the fusel'age 2 and which is controlled by two trains of gear wheels 18', 19 and 19'. The wheels 18' mesh with toothed sectors 18 secured to a shaft 26, and this shaft can be rotatively operating a clutch 21 whereby the ordinary propellers 30 can be coupled to and disconnected from the engine shaft. When the propeller is disconnected from the engine, it can be arrested by means of a brake 20 which is operated through the medium of a hand-lever 31.

For ordinary flying, the planes are set in a more or less horizontal position, and the propeller 30 is coupled to the engine. For ascent and descent, the propeller 30 is disconnected and stopped, the mast 3 is cou-v pled to the engine, and the planes 1 are set at an angle to the horizontal in opposite directions so asto act as a lifting screw. Z'At the same time the planes 4 are set in a vertical position, as shown dotted in Fig. 1, so as to act as stabilizing plane. The speed of the lifting screw is re ulated by an adjustment of the friction isc 7.

I claim j 1. A flying machine of the. character described comprising a fuselage, a rotatable mast surmounting said fuselage, a pair of horizontal, coaxial shafts held rotatably by it 23, in

shafts,

for pitching the planes about the shafts so that they will act as a lifting propeller when the mast 1s rotated, a pair of horizontal, coaxial shafts held rotatably in the fuselage, carrying planes connected to said latter shafts, and means for adjusting said latter shafts rotatively for varying the angular position of their planes.

2. A flying machine of the character described comprising a fuselage, a rotatable, hollow mast surmounting said fuselage, two horizontal, coaxial shafts held rotatably by said mast,

lage,carrying planes connected to said latcarrying planes connected to said shafts, a rod arranged to slide \vith1n latter shafts rotatively for varying the angular position of their planes.

3. A fiying machine of the character described comprising a fuselage, a rotatable,"

hollow mast surmounting said fuselage, two horizontal, coaxial shafts held rotatably by said mast, carrying planes connected to said shafts, a rod arranged to slide Within the mast, a crank mechanism connecting said rod to the shafts so that the latter can be turned thereby for pitching the planes to act as alifting propeller, a driving shaft arranged at right angles to the mast, a fric' tion gear adapted to transmit motion from the driving shaft to the mast at different speeds, a pair of horizontal, coaxial shafts held rotatably in the fuselage, carrying planes connected to said latter shafts, and gears for turning said latter shafts for varying the angular position of their planes.

ERICH OTTO. 

